Electromagnetic Scattering from Dielectrically Coated Axisymmetric Objects Using the Generalized Point-Matching Technique

Al‐Rizzo, Hussain M.; Tranquilla, J.M.

doi:10.1006/jcph.1995.1139

Cited by 20 publications

(11 citation statements)

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“…The point matching method has recently been applied to compute microwave scattering by oblate spheroidal hydrometeors up to a size parameter of 9.42, expressed as the equivolume radius [48]. The point matching method has also been adapted to coated axisymmetric objects [49] and scattering computations have been compared with EBCM results. Because this method does not use the translation addition theorem for spherical vector wavefunctions, much less analytical and programming effort is needed to implement this method.…”

Section: Point Matching Methodsmentioning

confidence: 99%

A Review of Elastic Light Scattering Theories

Wriedt

1998

Part. Part. Syst. Charact.

165

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Mie scattering is an important tool for diagnosing microparticles or aerosol particles in technical or natural environments. Mie theory is restricted to spherical, homogeneous, isotropic and non-magnetic particles in a non-absorbing medium. However, as microparticles are hardly ever spherical or homogeneous, there is much interest in more advanced scattering theories. During recent decades, scattering methods for non-spherical and non-homogeneous particles have been developed and even some computer codes are readily available. Extension of Mie theory covers coated spheres, stratified spheres and clustered spheres. For homogeneous non-spherical particles such as spheroids, ellipsoids and finite cylinders, surface discretization methods have been developed. Scattering by inhomogeneous particles may be computed by volume discretization methods.

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Section: Point Matching Methodsmentioning

confidence: 99%

A Review of Elastic Light Scattering Theories

Wriedt

1998

Part. Part. Syst. Charact.

165

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“…This will enable an azimuthal decoupling of the characteristic equation system as discussed later (compare also with [34]). The following integrals are needed in performing the Fourier tranformation:…”

Section: Axisymmetric Geometriesmentioning

confidence: 99%

“…Only if combined with a least-square procedure this method becomes more practicable [17,[32][33][34]. Thus, the Mie theory for spheres is still the mostly used method in practical applications, and non-spherical particles are often considered by use of its equal-volume or equalsurface sphere although this approximation produces wrong results for the polarization behavior.…”

Section: Introductionmentioning

confidence: 99%

The Discretized MIE-Formalism for Electromagnetic Scattering

Rother¹,

Schmidt²

1997

PIER

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“…In x 2 we describe our implementation of the PMM, which is based on the treatments of Morrison & Cross (1974) and Al-Rizzo & Tranquilla (1995). Section 3 describes the computation of efficiency factors for extinction, scattering, radiation pressure, and radiative torque.…”

Section: Introductionmentioning

confidence: 99%

Torques on Spheroidal Silicate Grains Exposed to Anisotropic Interstellar Radiation Fields

Weingartner

Jordan

2008

ApJ

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Radiative torques, due to the absorption and scattering of starlight, are thought to play a major role in the alignment of grains with the interstellar magnetic field. The absorption of radiation also gives rise to recoil torques, associated with the photoelectric effect and photodesorption. The recoil torques are much more difficult to model and compute than the direct radiative torque. Here, we consider the relatively simple case of a spheroidal grain. Given our best estimates for the photoelectric yield and other relevant grain physical properties, we find that the recoil torques contribute at the %10% level or less compared with the direct radiative torque. We recommend that the recoil torques not be included in models of radiation-driven grain alignment at this time. However, additional experimental characterization of the surface properties and photoelectric yield for submicron grains is needed to better quantify the magnitude of these torques.

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Electromagnetic Scattering from Dielectrically Coated Axisymmetric Objects Using the Generalized Point-Matching Technique

Cited by 20 publications

References 0 publications

A Review of Elastic Light Scattering Theories

A Review of Elastic Light Scattering Theories

The Discretized MIE-Formalism for Electromagnetic Scattering

Torques on Spheroidal Silicate Grains Exposed to Anisotropic Interstellar Radiation Fields

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